Facemask pressure adjustment device



FIG. 1 is a front perspective view of the facemask pressure adjustment device, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a right side elevational view thereof, showing the adjustment in a first alternate position; and,

FIG. 9 is a right side elevational view thereof, showing the adjustment in a second alternate position.

The dash-dash broken lines in the drawings depict portions of the facemask pressure adjustment device that form no part of the claimed design. The dash-dot broken lines define the bounds of the claimed design and form no part thereof. 

CLAIM The ornamental design for a facemask pressure adjustment device, as shown and described. 